Monday, January 25, 2016

Physics Video Tuesday - January 26, 2016

AAPT’S Physics Video Tuesday     January 26, 2016

Sulfur Hexafluoride and Helum – At the Same Time! Explained        by James Lincoln

Sulfur Hexafluoride vs Girl (Anna Spitz)    by James Lincoln and Anna Spitz

These two videos we made to feature some of the demonstrations that can be done with Sulfur Hexafluoride.

The first was made by James Lincoln as part of a video contest and the second was made by James Lincoln and Anna Spitz as part of a video demonstration series.

Sulfur Hexafluoride is available from Flinn Scientific, and should only be inhaled from a balloon, as should helium, and never from the bottle directly.


Sulfur Hexafluoride with Musical Instruments by Kyle Forinash

Using Helium and SF6 in a trombone and a few other instruments.

Sulfur Hexafluoride Deep Voice Gas by Steve Spangler Science

Spangler does the voice demo, and floats a boat on it, as well as show that SF6 prevents sparks.

Related Articles from The Physics Teacher

Helium & Sulfur in Musical Instruments:

Helium Speech - Applied Standing Waves:


To submit a video or make a suggestion email James Lincoln:

Monday, January 18, 2016

Physics Video Tuesday!

AAPT’S Physics Video Tuesday     January 19, 2016

Polarization Physics: AAPT FILMS     by James Lincoln

In this video you will find about 20 physics demos using polarizers and related equipment.  
Also included are explanations and instructions on how to succeed doing them.

      1.     Crossed Polarizers
2.      The Mechanical Polarizer (analogy)
3.       The Construction and Axis of Polarizers
4.       The Triple Polarizer
5.       Light waves as vectors
6.       LCD Screens
7.       Circular Polarization
8.       Stress in Plastics, Glass, & Packaging tape
9.       Prince Rupert’s Drop
10.   Reflected Glare
11.   Glare on surfaces
12.   Polarized Sun Glasses
13.   The Polarized Sky
14.   3d Glasses
15.   Malus’ Law (Angle vs Intensity)
16.   Brewster’s Angle
17.   The Faraday Effect
18.   The Verdet Constant
19.   Microwave & Radio Polarization
20.   Projector Polarization

This video was created as part of the AAPT Films Series.  
The series is written, directed, and hosted by James Lincoln.  
This particular video was funded by the AIP Meggers Grant. 


UCLA Physics: Circular Polarization   by James Lincoln

UCLA Physics: Polarization of Light   by James Lincoln

60 Symbols

Polarization (of Microwaves too!):

Paul Hewitt

Hewitt-Drew-it Polarization:
Polarized Glasses Explained:

Related Articles from The Physics Teacher

Microwave Polarization:
Malus’ Law (using Lasers):
Model of Polarizers:
To submit a video or make a suggestion email James Lincoln:  James[at]